ThinkCERCA provides a thematic alignment to Houghton Mifflin Harcourt Collections for English Language Arts, one of the most commonly used ELA curricula in the United States. The ThinkCERCA aligned sets (Direct Instruction, Applied Reading and Writing, and Additional Reading Practice) support the content that students will be focusing on in the HMH Collections anchor texts, standards, and performance tasks. Additional Direct Instruction resources are provided as an extra support for skills critical for success with the Collection topics and themes.